Characteristics of aufeis in the Kolyma River basin derived from Landsat images (2013-2017) ...

Present-day aufeis dataset was created by Landsat-8 OLI images for the period 2013-2019. Each aufeis was delineated by satellite images as polygon. Cloud-free Landsat images are obtained immediately after snowmelt season (e.g. between May, 17 and June, 16), to detect the highest possible number of a...

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Bibliographic Details
Main Authors: Makarieva, Olga, Shikhov, Andrey, Ostashov, Andrey, Nesterova, Nataliia
Format: Dataset
Language:English
Published: PANGAEA 2020
Subjects:
aufeis
Landsat
the Kolyma River
Reference/source
Identification
DATE/TIME
Comment
Aufeis area
LONGITUDE
LATITUDE
ELEVATION
Multiple investigations
Remote sensing Landsat
Aster GDEM
Kolyma
kolyma river
Online Access:https://dx.doi.org/10.1594/pangaea.925405
https://doi.pangaea.de/10.1594/PANGAEA.925405
Description
Summary:Present-day aufeis dataset was created by Landsat-8 OLI images for the period 2013-2019. Each aufeis was delineated by satellite images as polygon. Cloud-free Landsat images are obtained immediately after snowmelt season (e.g. between May, 17 and June, 16), to detect the highest possible number of aufeis. Critical values of Normalized Difference Snow Index (NDSI) were used for semi-automated aufeis detection. However, a detailed expert-based verification was performed after automated procedure, to distinguish snow-covered areas from aufeis and cross-reference historical and satellite-based data collections. According to Landsat data, the number of aufeis reaches 2216, with their total area about 879.7 km2. The difference between the Cadastre (1958) and the satellite-derived data may indicate significant changes of aufeis formation environments. ...

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